Titan USA TE63509 Roughing End Mills; Mill Diameter (Inch): 5/16; Mill Diameter (Decimal Inch): 0.3125; Number of Flutes: 4; Pitch: Coarse; Length of Cut (Inch): 3/4; Length of Cut (Decimal Inch): 0.7500; Shank Diameter (Inch): 0.3750; 3/8; Shank Dia